protected abstract ProgressEvent handleRequest()

in aws-lightsail-database/src/main/java/software/amazon/lightsail/database/BaseHandlerStd.java [49:116]
46 lines of code
18 McCabe index (conditional complexity)

  protected abstract ProgressEvent<ResourceModel, CallbackContext> handleRequest(
          final AmazonWebServicesClientProxy proxy, final ResourceHandlerRequest<ResourceModel> request,
          final CallbackContext callbackContext, final ProxyClient<LightsailClient> proxyClient, final Logger logger);

  /**
   * This method handles the exceptions which are caught in the handlers, returns in progress if those error codes are
   * ignored, or retires with a delay if error codes are retryable, or emits an appropriate error code
   *
   * @param e
   *            exception which was caught
   * @param resourceModel
   *            desired resource model for the request
   * @param callbackContext
   *            callback context for current invocation
   * @param ignoreErrorCodes
   *            error codes which should be ignored, i.e. code which should return in-progress
   * @param logger
   *            logger to log statements
   *
   * @return ProgressEvent<ResourceModel, CallbackContext>
   */
  public static ProgressEvent<ResourceModel, CallbackContext> handleError(final Exception e,
                                                                          final ResourceModel resourceModel, final CallbackContext callbackContext,
                                                                          final List<String> ignoreErrorCodes, final Logger logger, final String errorLocation) {

    logger.log(String.format("Error during operation: %s, Error message: %s", errorLocation, e.getMessage()));
    logger.log(Arrays.toString(e.getStackTrace()));

    if (e instanceof AwsServiceException) {
      final String errorCode = ((AwsServiceException) e).awsErrorDetails().errorCode();

      if (ignoreErrorCodes.contains(errorCode)) {
        logger.log("This error is expected at this stage. Continuing execution.");
        return ProgressEvent.progress(resourceModel, callbackContext);
      }
      logger.log(String.format("%s", ((AwsServiceException) e).awsErrorDetails()));

      switch (errorCode) {
        case NotFoundException:
          return ProgressEvent.defaultFailureHandler(new CfnNotFoundException(e),
                  HandlerErrorCode.NotFound);
        case InvalidInputException:
        case InvalidParameterCombination:
        case InvalidQueryParameter:
        case InvalidAction:
        case ValidationError:
        case MissingParameter:
        case OperationFailureException:
          return ProgressEvent.defaultFailureHandler(new CfnInvalidRequestException(e),
                  HandlerErrorCode.InvalidRequest);
        case ThrottlingException:
          return ProgressEvent.defaultFailureHandler(new CfnThrottlingException(e), HandlerErrorCode.Throttling);
        case NotAuthorized:
        case OptInRequired:
        case AccessDeniedException:
        case UnauthenticatedException:
          return ProgressEvent.defaultFailureHandler(new CfnAccessDeniedException(e),
                  HandlerErrorCode.AccessDenied);
        case InternalFailure:
        case ServiceUnavailable:
        default:
          return ProgressEvent.defaultFailureHandler(new CfnGeneralServiceException(e),
                  HandlerErrorCode.GeneralServiceException);
      }
    }
    return ProgressEvent.defaultFailureHandler(new CfnGeneralServiceException(e),
            HandlerErrorCode.GeneralServiceException);
  }